Question 56601
2/3+3K/4=71/12
3K/4=71/12-2/3
3K/4=71/12-8/12
3K/4=63/12
3K*12=63*4
36K=252
K=252/36
K=7
PROOF
2/3+3*7/4=71/12
21/4=71/12-2/3
21/4=(71-8)/12
21/4=63/12
63*4=21*12
252=252